
ACHME COMPUTER, INC.

MS-4129 (ISA 486 AL1), ALI 486 NONCACHE

Processor   CX486SX/80486SX/80487SX/AMD486DX/80486DX/80486DX2/Pentium
            Overdrive
Processor   25/33/40/50(internal)/50/66(internal)MHz
Speed
Chip Set    ALI
Max.        112MB
Onboard
DRAM
Cache       None
BIOS        AMI
Dimensions  220mm x 220mm
I/O Options None
NPU Options CX487

[Image]

                                CONNECTIONS

  Purpose                 Location      Purpose               Location

  Keyboard connector         J3         Turbo LED             J5 (pins
                                                               12-13)

  External battery           J4         Turbo switch          J5 (pins
                                                               15-17)

  Power LED & keylock   J5 (pins 1-5)   Reset switch          J5 (pins
                                                               19-20)

  Speaker                  J5 (pins
                            7-10)

                        USER CONFIGURABLE SETTINGS

                Function                     Jumper          Position

     Factory configured - do not             CN1              Open
      alter

     Factory configured - do not             CN2              Open
      alter

     Factory configured - do not             CN3              Open
      alter

     Battery type select internal             J4           pins 2 & 3
                                                              closed

      Battery type select external             J4             Closed

     Monitor type select monochrome          JP4              Open

      Monitor type select color               JP4           pins 2 & 3
                                                              closed

     CPU type select PGA                     JP28             Open

      CPU type select PQFP                    JP28            Closed

                        DRAM CONFIGURATION

      Size            Bank 0           Bank 1          Bank 2

       1MB         (4) 256K x 9         NONE            NONE

       1MB             NONE        (1) 256K x 36        NONE

       1MB             NONE             NONE        (1) 256K x 36

       1MB             NONE        (1) 256K x 36        NONE

       2MB         (4) 256K x 9    (1) 256K x 36        NONE

       2MB             NONE        (1) 512K x 36        NONE

       2MB             NONE             NONE        (1) 512K x 36

       2MB             NONE        (1) 256K x 36    (1) 256K x 36

       2MB             NONE        (1) 512K x 36        NONE

       3MB         (4) 256K x 9    (1) 512K x 36        NONE

       3MB         (4) 256K x 9    (1) 256K x 36    (1) 256K x 36

       3MB             NONE        (1) 256K x 36    (1) 512K x 36

       3MB             NONE        (1) 512K x 36    (1) 256K x 36

       4MB          (4) 1M x 9          NONE            NONE

       4MB         (4) 256K x 9    (1) 512K x 36    (1) 256K x 36

       4MB             NONE         (1) 1M x 36         NONE

       4MB             NONE             NONE         (1) 1M x 36

       4MB             NONE        (1) 512K x 36    (1) 512K x 36

       4MB             NONE         (1) 1M x 36         NONE

       5MB         (4) 256K x 9     (1) 1M x 36         NONE

       5MB             NONE        (1) 256K x 36     (1) 1M x 36

       5MB             NONE         (1) 1M x 36     (1) 256K x 36

       6MB         (4) 256K x 9    (1) 256K x 36     (1) 1M x 36

       6MB         (4) 256K x 9     (1) 1M x 36     (1) 256K x 36

       6MB          (1) 1M x 9     (1) 256K x 36    (1) 256K x 36

       6MB             NONE        (1) 512K x 36     (1) 1M x 36

       7MB         (4) 256K x 9    (1) 512K x 36     (1) 1M x 36

       7MB          (1) 1M x 9     (1) 512K x 36    (1) 256K x 36

       8MB             NONE         (1) 2M x 36         NONE

       8MB             NONE             NONE         (1) 2M x 36

       8MB             NONE         (1) 1M x 36      (1) 1M x 36

       8MB             NONE         (1) 2M x 36         NONE

                    DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1          Bank 2

       9MB         (4) 256K x 9     (1) 2M x 36         NONE

       9MB         (4) 256K x 9     (1) 1M x 36      (1) 1M x 36

       9MB          (1) 1M x 9     (1) 256K x 36     (1) 1M x 36

       9MB          (1) 1M x 9      (1) 1M x 36     (1) 256K x 36

       9MB             NONE        (1) 256K x 36     (1) 2M x 36

      10MB             NONE        (1) 512K x 36     (1) 2M x 36

      10MB             NONE         (1) 2M x 36     (1) 256K x 36

      10MB         (4) 256K x 9     (1) 2M x 36     (1) 256K x 36

      10MB          (1) 1M x 9     (1) 512K x 36     (1) 1M x 36

      10MB             NONE         (1) 2M x 36     (1) 512K x 36

      12MB          (1) 1M x 9      (1) 1M x 36      (1) 1M x 36

      12MB             NONE         (1) 1M x 36      (1) 2M x 36

      12MB             NONE         (1) 2M x 36      (1) 1M x 36

      13MB         (4) 256K x 9     (1) 2M x 36      (1) 1M x 36

      13MB          (1) 1M x 9      (1) 2M x 36     (1) 256K x 36

      16MB          (4) 4M x 9          NONE            NONE

      16MB          (1) 1M x 9      (1) 2M x 36      (1) 1M x 36

      16MB             NONE         (1) 4M x 36         NONE

      16MB             NONE             NONE         (1) 4M x 36

      16MB             NONE         (1) 2M x 36      (1) 2M x 36

      16MB             NONE         (1) 4M x 36         NONE

      17MB         (4) 256K x 9     (1) 4M x 36         NONE

      17MB             NONE        (1) 256K x 36     (1) 4M x 36

      17MB             NONE         (1) 4M x 36     (1) 256K x 36

      18MB         (4) 256K x 9    (1) 256K x 36     (1) 4M x 36

      18MB         (4) 256K x 9     (1) 4M x 36     (1) 256K x 36

      18MB          (1) 4M x 9     (1) 256K x 36    (1) 256K x 36

      18MB             NONE        (1) 512K x 36     (1) 4M x 36

      18MB         (1) 4M x 36          NONE        (1) 512K x 36

      18MB             NONE         (1) 4M x 36     (1) 512K x 36

      19MB         (4) 256K x 9    (1) 512K x 36     (1) 4M x 36

      19MB          (1) 4M x 9     (1) 512K x 36    (1) 256K x 36

      20MB             NONE         (1) 1M x 36      (1) 4M x 36

      20MB             NONE         (1) 4M x 36      (1) 1M x 36

      21MB         (4) 256K x 9     (1) 1M x 36      (1) 4M x 36

      21MB         (4) 256K x 9     (1) 4M x 36      (1) 1M x 36

      21MB          (1) 1M x 9     (1) 256K x 36     (1) 4M x 36

      21MB          (1) 1M x 9      (1) 4M x 36     (1) 256K x 36

      21MB          (1) 4M x 9     (1) 256K x 36     (1) 1M x 36

      21MB          (1) 4M x 9      (1) 1M x 36     (1) 256K x 36

      22MB          (1) 1M x 9     (1) 512K x 36     (1) 4M x 36

      22MB          (1) 4M x 9     (1) 512K x 36     (1) 1M x 36

      24MB          (1) 1M x 9      (1) 1M x 36      (1) 4M x 36

      24MB          (1) 1M x 9      (1) 4M x 36      (1) 1M x 36

                    DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1          Bank 2

      24MB          (1) 4M x 9      (1) 1M x 36      (1) 1M x 36

      24MB             NONE         (1) 2M x 36      (1) 4M x 36

      24MB             NONE         (1) 4M x 36      (1) 2M x 36

      25MB         (4) 256K x 9     (1) 2M x 36      (1) 4M x 36

      25MB          (1) 4M x 9      (1) 2M x 36     (1) 256K x 36

      28MB          (1) 1M x 9      (1) 2M x 36      (1) 4M x 36

      28MB          (1) 4M x 9      (1) 2M x 36      (1) 1M x 36

      32MB             NONE         (1) 8M x 36         NONE

      32MB             NONE             NONE         (1) 8M x 36

      32MB             NONE         (1) 4M x 36      (1) 4M x 36

      32MB             NONE         (1) 8M x 36         NONE

      33MB         (4) 256K x 9     (1) 8M x 36         NONE

      33MB         (4) 256K x 9     (1) 4M x 36      (1) 4M x 36

      33MB          (1) 4M x 9     (1) 256K x 36     (1) 4M x 36

      33MB          (1) 4M x 9      (1) 4M x 36     (1) 256K x 36

      33MB             NONE        (1) 256K x 36     (1) 8M x 36

      33MB             NONE         (1) 8M x 36     (1) 256K x 36

      34MB         (4) 256K x 9     (1) 8M x 36     (1) 256K x 36

      34MB          (1) 4M x 9     (1) 512K x 36     (1) 4M x 36

      34MB             NONE        (1) 512K x 36     (1) 8M x 36

      34MB             NONE         (1) 8M x 36     (1) 512K x 36

      36MB          (1) 1M x 9      (1) 4M x 36      (1) 4M x 36

      36MB          (1) 4M x 9      (1) 1M x 36      (1) 4M x 36

      36MB          (1) 4M x 9      (1) 4M x 36      (1) 1M x 36

      36MB             NONE         (1) 1M x 36      (1) 8M x 36

      36MB             NONE         (1) 8M x 36      (1) 1M x 36

      37MB         (4) 256K x 9     (1) 8M x 36      (1) 1M x 36

      37MB          (1) 1M x 9      (1) 8M x 36     (1) 256K x 36

      40MB          (1) 1M x 9      (1) 8M x 36      (1) 1M x 36

      40MB          (1) 4M x 9      (1) 2M x 36      (1) 4M x 36

      40MB             NONE         (1) 2M x 36      (1) 8M x 36

      40MB             NONE         (1) 8M x 36      (1) 2M x 36

      48MB          (1) 4M x 9      (1) 4M x 36      (1) 4M x 36

      48MB             NONE         (1) 4M x 36      (1) 8M x 36

      48MB             NONE         (1) 8M x 36      (1) 4M x 36

      49MB         (4) 256K x 9     (1) 8M x 36      (1) 4M x 36

      49MB          (1) 4M x 9      (1) 8M x 36     (1) 256K x 36

      52MB          (1) 1M x 9      (1) 8M x 36      (1) 4M x 36

      52MB          (1) 4M x 9      (1) 8M x 36      (1) 1M x 36

      64MB         (4) 16M x 9          NONE            NONE

      64MB          (1) 4M x 9      (1) 8M x 36      (1) 4M x 36

      64MB             NONE         (1) 8M x 36      (1) 8M x 36

      66MB         (4) 16M x 9     (1) 256K x 36    (1) 256K x 36

      67MB         (4) 16M x 9     (1) 512K x 36    (1) 256K x 36

                    DRAM CONFIGURATION (CONT)

      Size            Bank 0           Bank 1          Bank 2

      69MB         (4) 16M x 9     (1) 256K x 36     (1) 1M x 36

      69MB         (4) 16M x 9      (1) 1M x 36     (1) 256K x 36

      70MB         (4) 16M x 9     (1) 512K x 36     (1) 1M x 36

      72MB         (4) 16M x 9      (1) 1M x 36      (1) 1M x 36

      73MB         (4) 16M x 9      (1) 2M x 36     (1) 256K x 36

      76MB         (4) 16M x 9      (1) 2M x 36      (1) 1M x 36

      81MB         (4) 16M x 9     (1) 256K x 36     (1) 4M x 36

      81MB         (4) 16M x 9      (1) 4M x 36     (1) 256K x 36

      82MB         (4) 16M x 9     (1) 512K x 36     (1) 4M x 36

      84MB         (4) 16M x 9      (1) 1M x 36      (1) 4M x 36

      84MB         (4) 16M x 9      (1) 4M x 36      (1) 1M x 36

      88MB         (4) 16M x 9      (1) 2M x 36      (1) 4M x 36

      96MB         (4) 16M x 9      (1) 4M x 36      (1) 4M x 36

      97MB         (4) 16M x 9      (1) 8M x 36     (1) 256K x 36

      100MB        (4) 16M x 9      (1) 8M x 36      (1) 1M x 36

      112MB        (4) 16M x 9      (1) 8M x 36      (1) 4M x 36

                          CPU TYPE CONFIGURATION

           Type                      JP10                   JP14

          80486SX                    Open             pins 2 & 3 closed

          80487SX             pins 1 & 2 closed       pins 1 & 2, 3 & 4
                                                           closed

        80486DX/DX2           pins 2 & 3 closed       pins 1 & 2, 3 & 4
                                                           closed

                          CPU TYPE CONFIGURATION

       Type          JP11    JP12   JP13    JP17   JP18    JP19    JP27

  CX486SX/CX487SX    Open    1 &     1 &    1 &     1 &    1 &    Closed
                              2      2       2      2       2

      Pentium        Open    1 &     1 &    1 &     1 &    1 &    Closed
     Overdrive                2      2       2      2       2

  Note: Pins designated should be in the closed position.

                          CPU SPEED CONFIGURATION

      Speed           JP3          JP16           JP24          JP25

      25MHz          1 & 2         1 & 2         1 & 2          3 & 4

      33MHz          1 & 2         1 & 2         1 & 2      1 & 2, 5 & 6

      40MHz          1 & 2         1 & 2         1 & 2      1 & 2, 3 & 4,
                                                                5 & 6

     50iMHz          1 & 2         1 & 2         1 & 2          3 & 4

      50MHz          2 & 3         2 & 3         2 & 3          3 & 4

     66iMHz          1 & 2         1 & 2         1 & 2      1 & 2, 5 & 6

  Note: Pins designated should be in the closed position.

